Lock-actuated switch



April 19, 1927.

JR. MCLELLAN LOCK ACTUATED SWITCH Filed Dec. 8, 1925 .nn mm n 3 ma G 1M M R h m 7W, 2O U J n ,a

ATTORNEY.

Patented Apr. 19, 1927.

UNITED STATES PATENT QFFlQE.

JOSEPH R. MCLELLAN, OF WICHITA, KANSAS, ASSIGNOR OF NE-IIALF T0 HERMAN F. HOFFMAN, OF WICHITA, KANSAS. l

LOCK-ACTUATED SWITCH.

Application filed December My invention relates to a door catch and alarm system to be applied to doors entering the tellers cage in banking institutions.

The object of my invention is to provide a door catch that can be set in such a way that by turning the knob, a burglar alarm system will be turned on.

A further object of my invention is to provide a catch whereby an alarm system may be set in action, undiscernible by the burglar.

A still further object of my invention is to provide a catch. that the burglar will turn in the alarm while opening the door.

Referring to the rglrawings:

Fig. 1 is a detailed view of the elements comprising the essential parts of the invention, the lock being` attached io the door, and the keeper containing the switch attached to the door post, the face plate being re'- moved from housing for convenience of illustration.

Fig. 9, is a sectional view on line V--V in Fig. 1, looking in the direction of the arrow.

Fig. 3 is a sectional view through the switch housing, taken on line VI-VI in Fig. 1, looking in the direction of the arrow.

Fig. 4 is a transverse view of the keeper housing, parts broken away for convenience of illustration.

The knob 11, is placed on the outside of the cage door and the handle 13 is on the inside of the door. It will be understood that the door is mounted on a track sliding horizontally.

The disclosure of my invention will be seen in Figures 1, 2, and 3, and the following is the description thereof: A housing 13 is provided, and positioned therein is a' catch bolt 14 pivoted at 15, and tensioned by a spring 16 engaging on a sub-catch bolt 17. The hook of said catch adapted to engage through a slot in the housing 29 and dropping downward will engage the housing at the bottom of the slot as at 14', the said housing functioning as a keeper. The sun-bolt is provided with a handle 18 laterally extending therefrom, and in the bar thereof is an elongated slot 19 adapted to receive studs 20 which are rigidly mounted on the main bolt 14. The sub-eateh functions as a closing means for the switch.

The throw lever 21 is mounted on` the knob shaft 22 and when turned in the direcs, 1925. serial No. 74,101.

tion ef the arrow A, the wing D will engage with the pin 23 and raising the catch member 14 carrying with it member 17 to the position as shown by dotted lines B at which time the door Slay be opened as with any ordinary catch, but should the knob be turned in the'direction of the arrow C, the throw lever will engage on the rounded corner of the catch member 17 as at E throw ing Said n'iember to a position as shown by dotted lines 17', and by further revolution of the knob the said men'ibers 14 and 17 are raised upward to a position as shown by dotted lines B and simultaneous therewith the pin 24 will be driven upward until the brushes Q6 and 27 are engaged thereon, by which means the circui` is closed between the wires 26 and 27 turning on a burglar alarm system.

It will be understood that the pin 24 is of non-conducting material and the members 25, 2G and 2? constitute a switch. The teller on leaving the cage should move the bars 17 to the position shown by dotted lines 17, then a burglar entering the cage may turn the knob in either direction and the switch will be closed turning 'on the alarm. The said switch housing has an inclosure plate 30 and is attached thereto by means of a hook F entering notch G at the lower end, and the opposite end is attached by means of a catch 31.

To disengage the connection, the turn button 31 is revolved disengaging the catch 31 allowing the plate 30 to be removed. Then by pressing the pin 28 lo its normal. position as shown in Fig. 1 the connection is broken and in position for future engagement.

The mechanism herein disclosed reads on banking institutions, but I do not wish to confine the invention to such purpose alone, as they principle thereof` may be modified and applied to other financial or commercial institutions.

Such other modilioations may be employed as lie within the scope of the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is z- 1. In a combined door catch and alarm system, a sliding door, a lock rigidly connected to said door, a pivotally mounted catch in said lock, af sub catch slidably mounted on said catch, a throw lever, 'a

shaft and a knob for actuating said lever, a Wing integral with said throw lever, said wing' engaging With a' stud integral on said catch as actuating ineanS by one Way rotation of the knob, disengaging the hook of said catch, a second wingl integral with said throw lever. said wing' adapted to engage the end of said sul) catch in an opposite rotation from first said rotation, Sliding` said catch outwardly to a determined distance and simultaneously elevating` the 'free vend of first Said catch. closing a switch and disengaging the catch Ytroni the keeper siniultaneously.

ln a combined door catch and alarin system. a door and a door post, said door slidahly engaging to and from said post, a keeper functioning as a housing7 an electric switch housed Within said keeper, a lock on said door having a pivotally mounted catch therein, a sub catch slidably engaging on the Side of the tree end ot said` catch, al laterallg,7 extending' handle integral with said sub catch, said handle functioning as ineans for Sliding said catch so that the outwardly exending end will engage the throw ineinlier oit an electric switch, a throw lever intei-medititel)v positioned between the nivoted point and the catch ends of said levers, a kneh and a shalt Ytor rotating .said lever in opposite directions, and hy either chosen rotation the said catch will close said switch, i'or the purpose described.

JOSEPH R. MCLELLAN. 

